Still, not to fear. If anyone can get The Red Devils out of trouble, it's Wayne Rooney .

There's a small problem there, unfortunately. Though Wayne's found form again in the last couple of months, any potential for late-season heroics has now been nipped in the bud by a serious knee injury . United's captain has been sidelined for up to six weeks and is now likely to miss some massive fixtures in the run in.

In keeping with the mutinous atmosphere at Old Trafford at the moment, many seem to think that Rooney's injury might spell disaster for Louis van Gaal . The last thing the Dutchman needs is to lose his main man - as Twitter's finest trolls are now keen to point out.

Some reckon that Louis will be seriously worried right now...

Others seem to think he'll be stunned by the setback...

Some think that Van Gaal's managerial rivals will be loving the news...

Even if he's not the only one who'll suffer...

Some reckon Van Gaal will be feeling pretty emotional right now...

And that he'll have a difficult job to do in Rooney's absence...

Others seem to think that United's season can only go downhill from here...

And that the supporters won't be able to take it...

Some fans are already lapsing into despair...

While, last of all, others have finally lost it - this is the last straw.

So there we have it. Plenty of people seem to think that Rooney's injury might have terrible consequences for the rest of the campaign.

Will Van Gaal be able to do without his star striker? Only time will tell.